METHOD OF ARC-PLASMA CLEANING OF METAL PRODUCT SURFACE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC B23K9/13 B23K31/10 C23F4/00 

FIELD: metallurgy.

SUBSTANCE: method involves generating a plasma jet from at least one plasmatron, which is manually or mechanically directed to the surface of the product in the cleaning zone and moved relative to the surface to be treated. The cleaning is performed by a plasma jet, which is scanned over the surface, by softening, melting, evaporation or sublimation of surface contamination from the surface to be cleaned. The positive potential from the power source of the plasmatron arc is connected to the part to be cleaned, forming an anode region of discharge, which is sent to the cleaning zone and scans the surface to be cleaned. During the cleaning process, the surface to be cleaned is prevented from melting by means of a temperature sensor of the cleaned surface, which is electrically connected to the magnetic system of the plasma jet and anode spot movement and the mechanical system of the plasmatron movement. As a result, the surface of pipelines is cleaned providing high cleanliness quality (at the molecular and atomic level), environmentally friendly, as there are no harmful emissions to the environment, no noise and electromagnetic radiation.

EFFECT: method and device can work at any high and low ambient temperatures.

7 cl, 1 dwg